Stockpiles for everything would be amazing, but in the meantime, can we please have stockpiles for Petrified Seashells? considering how many of them you get and need for fossil collections...
Treating them as stones (as they are petrified) could be a thing, would allow to stick them into stone stockpiles and could give a nice geometric pattern when paving with them:
"The psychological trials of dwellers in the last times will be equal to the physical trials of the martyrs. In order to face these trials we must be living in a different world."